Road plow



Nov. 1-9, 1929.

w. A. BONNEL ROAD PLOW Filed Nov. 12, 1928 5 Sheets-Sheet 1 W11 .Barzzzal Nov. 19, 1929. w. A. BONNEL 1,736,575

ROADPLOW Filed Nov. l2, 1928 5 Sheets-Sheet 2 0. o Q00 7 Q00 0 9. 0o

11 flannel m Nov. 19, 1929. w. A. BONNEL ROAD PLOW Filed Nov. 12. 1928 3 Sheets-Sheet 5 Patented Nov. 19, 1929 UNITED STATES WILLIAM A. BONNEL, OF CAMBRIDGE, KANSAS ROAD PLOW Application filed November 12, 1928. Serial Nb. 318,783.

This invention aims to provide a plow so constructed that it can be drawn by a tractor, novel means being provided for adjusting the share with respect to the soil, the machine being of use, primarily but not exclusively, in breaking up the hard surface of a roadway when the roadway is to be repaired.

In the accompanying. drawings Figure 1 is a side elevation;

Figure 2 is a top plan;

Figure 3 is a transverse section;

Figures 4 and 5 are fragmental transverse sections showing how the shafts are mounted;

Figure 6 is an elevation showing one of the links.

In carrying out the invention there is provided a truck including a body 1, com rising a rectangular frame 2 carrying a plat orm 3, the frame of the truck having a forward extension 4. Bearings 5 are mounted on the sides of the frame 2. A rear shaft 6 is mounted to rock in the bearings 5. The shaft 6 has a depending arm 7 on which a ground wheel 8 is journaled.

Bearings 9 are mounted on the frame 2 in front of the bearings 5. In the bearings 9 is a shaft 10 which is mounted to rock. The shaft 10 has a depending arm 11, on which a ground wheel 12 is journaled. It is to be observed that the ground wheel 12 extends a little further forward than does the ground wheel 8. This construction is useful in raising and lowering the plow share as will be described hereinafter. Any suitable means 14 may be mounted in the ends of the rock shafts 6 and 10 to keep them from moving endwise out of their respective bearings.

Segments 15 are secured to the sides of the frame 2. Levers 16 are fulcrumed at 17 on the side portions of the frame 2. The levers 16 extend downwardly through slots 23 in the platform 3. The levers 16 are provided with latch mechanisms 18 which cooperate with the segments 15. Links 19 are pivotally connected at their forward ends to the lower ends of the levers 16. The links 19 are two-part structures, and the constituent parts of each link are connected by strong springs 20. The rear ends of the links 19 are pivotally connected with collars 21 mounted on the arms 7and 11 of, the shafts 6 and 10. The collars 21 can be adjusted up and down on the arms 11 and 7, and they are held in place by set screws 22 threaded into the collars and engaging the arms 11 and 7.

A cross beam 24, connected at its ends to the side portions of the frame 2, constitutes a part of the frame. Pulleys 25 are mounted to turn on the cross beam 24 and are located on opposite sides of the cross beam. Segments 26 are secured to the cross beam 24.

Levers 27 are fulcrumed at 28 on the cross beam 24 to swing transversely of the line of advance of the truck. The levers 27 carry latches 29 cooperating with the segments 26. The inner ends of chains 30, or other flexible elements are connected to the levers 27. The flexible elements 30 are extended outwardly in opposite directions and thence downwardly around the pulleys 25.

The flexible elements 30 are extended inwardly, as shown in Figure 3, and are secured at their lower ends, as shown at 81, to a forwardly extended beam 32 carrying a share 33 so constructed that it will be eflicient to break up thehard surface of a roadway. The share 33 may be in the nature of :11 mole plow or a middle buster, or in any other form that can be used conveniently in connection with road work. On the forward end of the plow beam 32 there is a clevis 34, so that the truck can be drawn along advantageously by means of a tractor (not shown). The member 35 which connects the clevis'34 pivotally' with the forward end of the plow beam 82, serves as a pivotal mounting for the lower end of the link 36, the upper end of the link being pivoted at 37 to the forward end of the extension 4 of the frame 2 of the truck.

In practical operation the plow beam 32 with the share 33 can be swung from side to side as occasion may require by means of the levers 27 and the flexible elements 30, the levers being held in adjusted positions by means of the latches 29 which cooperate with the segments 26. Through the instrumentality of the levers 16 and the links 19, the arms 7 and 11 can be swung forward and back, thereby to regulate the amount that the share 33 extends below the wheels 12 and 8 and penetrates the ground.

I claim 1. In a device of the class described, a truck including a body, transverse shafts spaced apart longitudinall of the truck and mounted to rock on the boc y, each shaft having a depending arm, ground wheels journaled on the arms and located at opposite sides of the truck, the center of rotation of one ground wheel being slightly in advance of the center of rotation of the other ground wheel when both of the arms are in vertical depending parallel relation, a plow beam disposed below the body, means for pivotally connecting the forward end of the plow beam to the forward end of the body, a share carried by the plow beam and disposed adjacent to the wheels, means mounted on the body and assembledwith the rear end of the beam for moving the beam and the share transversely of the line of advance of the truck, and mechanism for raising and lowering the wheels with respect to the share, said mechanism being connected to the arms and including actuating means under the con trol of an operator and mounted on the body.

2. In a device of the class described, a truck including a body, ground wheels supported for rotation on the body and located at opposite sides of the truck, a plow beam disposed below the body, means for pivotally connecting the forward end of the plow beam to the forward end of the body, a share carried by the plow beam and disposed adjacent to the wheels, mechanism for raising and lowering each wheel independently of the other with respect to the share, said mechanism including actuating means under the control of an operator and mounted on the body, levers mounted on the body to swing transversely of the line of advance of the truck, directionchanging elements on the body, and flexible members connected to the levers and to the rear end of the plow beam, the flexible members being looped around the directionchanging elements and constituting means for adjusting the rear end of the plow beam and the share transversely of the line of advance of the truck.

In testimony that I claim the foregoing as my own, Ihave hereto afiixed my signature.

WILLIAM A. BONNEL. 

